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Hello all,
I have had success when growing plants in the past but not so much lately. I set up this 125 gallon Discus tank about a year ago and have been having a difficult time getting my plants to really take off. Here is how I have it set up:

Substrate: black diamond blasting sand with 80 flourish tabs inserted.
Lighting: current USA satellite plus pro on for 8 hours per day
CO2 injection regulated by the Milwaukee pH controller set at 6.6
I use the EI dosing method straight into my sump filter.

I get very minimal algae growth on the leaves and the glass and the sump I built is pretty efficient so I do not check my water quality. But maybe I should? The tank is not overstocked (4 adult discus, 2 electric blue cara, 2 gold German rams, 28 serpae tetras, and a few bottom feeders). The plants I ha e are: dwarf hair grass, anubias, amazon swords, ludwigia repens, and a tiger lotus. Any advice would be much appreciated.

Thanks everyone,
Dan
What are your tank dimensions and which light size?
Think you need to up your lighting..
 

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Thanks for the reply. The tank is 60" wide x 18" deep x 25" tall. I have their 48" light. I am going to play with the setting a little bit and see if I can get a better color spectrum for plants.
Spectrum won't matter much and Currents RGB is pretty weak anyways.
You have at the most 65W of LEDs over 120 gallon tank.
Ends of the tank get little light and spread drops off fast past dead center.
also left to right
W/ CO2 injection you can do w/ more lighting.
Start w/ 100% on whites at least.
Extend photoperiod.

"Technically" you should be fine in the very center .

Can't say for sure it is the lighting but the setup makes me err uncomfortable.



 

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Jeff,
Is there a light you would recommend for deeper planted tanks like this?
Sort of:

STILL have rhe 60" issue but hanging them high will get you the needed spread.
You have PAR to spare.

That light uses mixed optics.
Some at 90, some at 120 degrees.

Popbloom is a sort of China direct that has some decent models.
The buying/warranty stuff is not for everyone.

An ancillary light to fill in some of the dead spots.
https://www.amazon.com/KZKR-Upgraded-Aquarium-Spectrum-Freshwater/dp/B07H79GVBL
Will get to that in a minute.
 
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